Timing mechanism



Feb. 10, 1931. A. w. CAPS 1,791,555

TIMING MECHANISM '/js ATTORNEYS Feb. 10, 1931.

A. W. CAPS TIMING MECHANISM Filed Dec. 28, 1927 I5 Sheets-Sheet 2 %5ATTORNEYS Feb. 1o, 1931.

iA. w. CAPs 1,791,555

TIMING MECHANISM Filed Dec. 28, 1927 .'5 Sheets-Sheet 3 INVENTOYR Yfri/20 a/JS BY als ATTORNEYS Patented est. 1o, 1931 ARTHUR JV. CAPS, OFROCHESTER, NEW YORK, ASSIGNOR T0 PHOTOSTAT CORPORA- TIGN, OF PROVIDENCE,RII-IODE ESLND, A CORPORATION 0F RHODE ISLAND TIMNG MEGHANISM eApplication filed December 28, 1927. Serial No. 243,081.

My present invention relates to mechanism for automatically timingperiodic actuations of power driven mechanisms. The embodiment shown inthe accompanying drawings and which Will be specifically describedhereinafter, has been designed for the purpose of imparting-intermittentmotion to a conveyor embodying a carrier for manipulating photographicprints through the developing apparatus of a photographic copyingmachine of the type'described in the copending application of John S.Greene, Serial No. 243,137 filed yDecember 28, 1927. The invention hasfor its obj ect to provide a simple, eiiicient and dependable. mechanismof this character so constructed and functioning that, upon beingtripped, it Will impart a predeterminedmovement to a driven element,which driven element in the present case is, as before stated, a printconveyer. .Y

To these and other ends the invention resices in certain improvementsand combinations of parts, all as Will be hereinafter more fullydescribed, the novel features beingl pointed out in the claims at theend of the specification. Y

ln the drawings Figure 1 is a fragmentary side elevation of aphotographic copying camera having attac-hed thereto afstop mechanismconstructed in accordance With, and illustrating one embodiment of, myinvention;

Figure 2 is an enlarged elevation of the stop mechanism and the motor byWhich it is driven, the cover plate of the housing of the former beingremoved, and the parts being in their normal or disconnected positions;

Figure 3 is a fragmentary View similar to Figure 2, but showing thedriving element of the stop mechanism connected;

Figure 4 is a vertical section taken on the line 4 4 of Figure 2;

Figure 5 is a horizontal section taken on the line 5 5 of Figure 4; and

Figure 6 is an enlarged perspective View of the shifting yoke for theclutch mechanism in detail.

Similar reference numerals throughout the several views indicate thesame parts.

l/Vhile my invention is not to be construed posing mechanism, and 2indicates generally the casing of the developing mechanism of such acamera. rllhe shaft indicated at 3 l will call the driven element, itbeing in the present application of the invention the drive shaft forthe print conveyor. A prime mover in the present shape of a motor aissupported on the side of the casing 2, and tno problem is to convert thecontinuous rotation of the shaft 5 of this motor into an intermittentrotation of the driven element or shaft 3. rlhis is accomplished throughthe depression of a manually operated arm 6 on a rock shaft 7. The rockshaft 6 is in contact with a plunger 8 extending into a casing 9, asdoes the shaft 5 of the motor i and in which casing the stop mechanismabout to be described is housed.

Referring more particularly to Figs. 2 and 4., the said motor shaft 5has fixed thereto Within the housing a Worm 10 Which Worm meshes withthewvorm gear 11 splined on a vertical shaft 12 suitably supported inbearings 15 and la in the casing or housing. Below the Worm gear 11there is Valso splined on theA vertical shaft 12 a clutch clement 15that slides vertically under thecontrol of a shiftingyolre or shipper1G, which iscarried by and xed to the plunger 8 before referred to.rlhis plunger.: reciprocates in suitable bearing bracketsy 18; is Anormally held elevated by aspring 1? coiled about it and thrustingbetween its lower bearings 18 and yoke 16, and its said yo re engages ina reduced portion of the clutch element 15 between shoulders 19 thereon.lt will thus be seen that with thel parts so fai' described the shaft 12is normally in gear with the continuously rotated motor shaft 5 and isYrotated thereby. Y

Surrounding the shaft 12 below the clutch element 15 is a complementaryclutch element 20. This clutch element, however, is free of the shaftturning on bushings 21 and 22 against a thrust Collar It is also in theform of a worm as indicated at 24, and has a sleeve portieri providedwith another worm 26. The worm meshes iith a freely turning worm gear 27mounted on a stud 28, while the worm 2G meshes with a worm gear 29 onthe driven element 8. It will, therefore, be seen that when the plunger8 is depressed and the eluteh elements l5 and 2O are thereby broughtinto engagement through the medium of the yolre or shipping device 16,the motor shaft 5 will through the worm 2G drive the driven element 3and also turn the free worm gear 27.

This worm gear 27 carries a stop pin 30, and a lateh member 3l having acam shaped engaging nose 32 is nermaily held, as in Figure 2 ont of thepath of this stop pin by engagement with the shipper yoke 1G. The latchpivote-Cl on a stud and has a bell crank arm 34 connected to a spring 35from which it derives a tendency to move into the path of the stop pin30. T-Nhen the plunger 8 is depressed and carries the clutch elements l5and 20 into engagement, the shipper' yoke 16 locks against a shoulder 36on the latch 3l, whereby the said clutch elements are retained inengagement. In moving into this locking position under the inluence ofits spring 35, the latch 31 carries its nose into a. position in rear ofbut in the path of the stop pin 30 on the worm gear 27, as shown inFigure 3a Upon a complete rotation of this worm gear, however, the stoppin 30 engages the nose 32 and throws it out so that the shoulder 3Greleases the shipper yolre 16 and allows it to withdraw the olutehelement 15 under the influence of spring 17, thereby discontinuing thedrive from worm 26 to worm gear 29 on the driven shaft 2. The gearing issuch that the desired rotation of driven shaft 3 is effected upon onerevolution of worm gear 27 similarly driven from the same normally freeclutch element 20.

I claim as my invention:

1. In a gear drive, the combination with a drive shaft, of a drivenshaft extending transversely to said drive shaft, a clutch shaft eXtending transversely to both said drive shaft and said driven shaft,gearing operatively Connecting said drive shaft to said clutch shaft torotate said clutch shaft from said drive shaft, a oluteh elementslidable longitudinally on said clutch shaft and operatively connectedthereto to rotate therewith, a sleeve rotatably mounted on said clutchshaft, said sleeve having a clutch portion for cooperation with saidslidahle clutch element when said element is in predetermined positionand also having two gear portions thereon, a gear on said driven shaftmeshing with one of said gear portions so that said driven shaft isdriven from said sleeve, a metering gear meshing with the other of saidgear portions, and means operated by said metering gear when saidmetering gear reaches a predetermined position for causing said slidahleclutch element to move out of engagement with said Clutch portion.

2. In a gear drive, the combination with a drive shaft, of a drivenshaft extending transversely to said drive shaft, a elutoh shaft eX-tending transversely to both said drive shaft and said driven shaft,gearing operatively oonneeting said drive shaft to said Clutch shaft torotate said Clutch shaft from said drive shaft, a eluteh elementslidable longitudinally on said eluteh shaft and operatively connectedthereto to rotate therewith, an integral one-piece sleeve rotatablymounted on said clutch shaft, said sleeve having a eluteh portion forcooperation with said slidahle clutch element and also having two gearportions, all formed integrally on said sleeve, a gear on said drivenshaft meshing with one of said gear portions so that said driven shaftis driven from said sleeve, a metering gear meshing with the other ofsaid gear portions, and means operated by said metering gear forCausinf-T said slidable Clutch element to move out of engagement withsaid Clutch portion of said sleeve.

3. In a gear drive, the combination with a clutch shaft, a driven shaft,a clutch element slidable longitudinally on said clutch shaft, and meansfor driving said clutch element, of an integral onepieee sleeverotatably mounted on said eluteh shaft, said sleeve having two gearportions and a Clutch portion for cooperation with said slidable clutchelement, all formed integrally on said sleeve, a gear on said drivenshaft meshing with one of said gear portions so that said driven shaftis driven from said sleeve, and a metering gear meshing with the otherof said gear portions for controlling said slidable clutch element.

ARTHUR W. CAPS.

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